PokerSolver
PokerSolver/4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs BTN iso raise 2bb

BB vs BTN iso raise 2bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · CO limps, BTN isolates to 2bb · Big blind to act

4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 5.14bbYour cards?
1bb
1bb
2bb
0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 62.6%Call 27.9%Raise 4/6bb 9.5%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO limps, BTN isolates to 2bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 100bb?

CO limps, BTN isolates to 2bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 100bb: the big blind (BB) folds 62.6%, calls 27.9% and raises 4/6bb 9.5%. Always call: TT-JJ, 22-33, K2s, 97s, 87s, 76s, AJo, A8o, KJo+. Always raise 4/6bb: QQ+, AKs, KJs, Q8s, JTs, 65s, AKo. Mixed: 44-99, A2s-AQs, KQs, K3s-KTs, Q9s+, Q2s-Q7s, J7s-J9s, T7s+, T4s, 98s, 92s-96s, 84s-86s, 74s-75s, 63s-64s, 53s+, AQo, A9o-ATo, A4o-A7o, K9o-KTo, Q9o+, J9o+, T9o, 97o+, 86o+, 76o, 64o+, 54o.

Always fold
J2s-J6s, T5s-T6s, T2s-T3s, 82s-83s, 72s-73s, 62s, 52s, 42s+, 32s, A2o-A3o, K2o-K8o, Q2o-Q8o, J2o-J8o, T2o-T8o, 92o-96o, 82o-85o, 72o-75o, 62o-63o, 52o-53o, 42o+, 32o
Always call
TT-JJ, 22-33, K2s, 97s, 87s, 76s, AJo, A8o, KJo+
Always raise 4/6bb
QQ+, AKs, KJs, Q8s, JTs, 65s, AKo
Mixed
44-99, A2s-AQs, KQs, K3s-KTs, Q9s+, Q2s-Q7s, J7s-J9s, T7s+, T4s, 98s, 92s-96s, 84s-86s, 74s-75s, 63s-64s, 53s+, AQo, A9o-ATo, A4o-A7o, K9o-KTo, Q9o+, J9o+, T9o, 97o+, 86o+, 76o, 64o+, 54o
Settings: 4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 100bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.66). A jackpot fee on bigger pots is not in this solve, so lines that build big pots may be slightly too loose. Bet sizes are the solved ones; a size that is not here plays like the nearest one.

Fits exactly: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: the ante from 93 of our own CoinPoker hands at $0.25/$0.50 with a $0.08 ante, played 2026-09-30; the caps and the preflop rule from coinpoker.com/games/texas-holdem/, fetched 2026-10-31.